/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.aliyun.dataworks.dataservice.common.http.constant;

/**
 * 通用常量
 * @author zishu.lf
 */
public class Constants {
    /**
     * 签名算法HmacSha256
     */
    public static final String HMAC_SHA256 = "HmacSHA256";
    /**
     * 编码UTF-8
     */
    public static final String ENCODING = "UTF-8";
    /**
     * UserAgent
     */
    public static final String USER_AGENT = "demo/aliyun/java";
    /**
     * 换行符
     */
    public static final String LF = "\n";
    /**
     * 串联符
     */
    public static final String SPE1 = ",";
    /**
     * 示意符
     */
    public static final String SPE2 = ":";
    /**
     * 连接符
     */
    public static final String SPE3 = "&";
    /**
     * 赋值符
     */
    public static final String SPE4 = "=";
    /**
     * 问号符
     */
    public static final String SPE5 = "?";
    /**
     * 默认请求超时时间,单位毫秒
     */
    public static final int DEFAULT_TIMEOUT = 20000;
    /**
     * 请求最大连接数
     */
    public static final int DEFAULT_MAX_CONNECTION = 200;
    /**
     * 参与签名的系统Header前缀,只有指定前缀的Header才会参与到签名中
     */
    public static final String CA_HEADER_TO_SIGN_PREFIX_SYSTEM = "X-Ca-";
}
